Table 3.
Enriched Aβ groups: baseline cognition and 24-month rates
| Variable | Nonenriched (N = 293) |
Aβ+ enriched (N = 60) |
||
|---|---|---|---|---|
| Mean (SD) | Range | Mean (SD) | Range | |
| Baseline cognition | ||||
| MMSE | 29.1 (1.11) | 24–30 | 28.9 (1.34) | 24–30 |
| ADAS13 | 8.6 (3.96) | 0–20 | 12.2 (3.89) | 1–24 |
| dMemory | 13.7 (3.13) | 6–23 | 11.1 (3.32) | 5–19 |
| iMemory | 14.5 (3.03) | 5–23 | 11.9 (3.34) | 3–21 |
| dAVLT | 7.9 (3.88) | 0–15 | 5.6 (3.61) | 0–15 |
| iAVLT | 55.1 (12.57) | 21–86 | 45.6 (9.97) | 23–74 |
| Trails A | 32.5 (9.72) | 14–77 | 41.0 (13.68) | 22–90 |
| Trails B | 76.9 (34.47) | 32–300 | 113.6 (47.36) | 51–251 |
| Category fluency | 21.0 (5.50) | 6–38 | 18.8 (5.01) | 7–28 |
| 24-month rates | ||||
| MMSE | −0.05 (0.09) | −0.54 to 0.05 | −0.12 (0.11) | −0.40 to 0.03 |
| ADAS13 | −0.27 (0.34) | −0.94 to 1.19 | 0.13 (0.46) | −0.81 to 1.33 |
| dMemory | 0.32 (0.49) | −1.15 to 1.58 | −0.29 (0.61) | −1.32 to 1.49 |
| iMemory | 0.49 (0.23) | −0.21 to 1.10 | 0.24 (0.26) | −0.25 to 1.07 |
| dAVLT | 0.30 (0.42) | −1.37 to 1.50 | −0.04 (0.43) | −1.00 to 1.17 |
| iAVLT | 1.16 (0.92) | −1.55 to 4.20 | 0.33 (0.95) | −1.99 to 3.06 |
| Trails A | −0.89 (1.75) | −5.01 to 14.26 | 0.24 (2.98) | −6.85 to 16.37 |
| Trails B | −0.84 (4.02) | −23.22 to 17.36 | 3.62 (8.77) | −16.24 to 33.90 |
| Category fluency | 0.05 (0.42) | −1.08 to 1.86 | −0.16 (0.47) | −1.21 to 1.28 |